1sna166777r0000 - m20-i-c5a

1sna166777r0000 – m20-i-c5a

TE Connectivity 1SNA166777R0000 M20-I-C5A is an ESSAILEC 20-circuit reverse-mounting socket rated at 8 A for industrial electrical measurement, protection, testing and control applications.

SKU: 1SNA166777R0000Alt SKU: M20-I-C5AMPN: 1SNA166777R0000
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List Price £128.70 ex VAT
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Why Choose the TE Connectivity 1SNA166777R0000 M20-I-C5A ESSAILEC Multicircuit Socket?

The TE Connectivity 1SNA166777R0000, also identified as M20-I-C5A, is a specialised 20-circuit ESSAILEC multicircuit socket designed for electrical measurement, testing, protection and control applications. Part of the established TE Connectivity / Entrelec ESSAILEC range, it provides a compact and dependable interface for connecting multiple measurement or control circuits within industrial electrical systems.

The M20-I-C5A uses a reverse-mounting configuration and is designed to work with compatible ESSAILEC multicircuit plugs. The modular ESSAILEC architecture enables multiple circuits to be connected and disconnected through a dedicated plug-and-socket interface, helping simplify testing, commissioning, maintenance and equipment replacement.

Designed for demanding electrical installations, the ESSAILEC multicircuit platform has a rated current of 8 A and a short-circuit withstand capability ranging from 25 A for 5 s to 800 A for 25 ms. The grey M20-I-C5A socket weighs approximately 190 g and is supplied with the accessories required for its mounting arrangement together with two coding pins.

Key Advantages

  • Specialised 20-circuit ESSAILEC multicircuit socket for industrial electrical systems.
  • Reverse-mounting design for dedicated panel and equipment installations.
  • 8 A rated current for measurement, protection and control circuits.
  • Short-circuit withstand capability from 25 A for 5 s to 800 A for 25 ms.
  • Compatible with the FIM20-I multicircuit plug.
  • Supplied with mounting accessories and two COP-E-1 coding pins.

Key Features

  • TE Connectivity / Entrelec ESSAILEC multicircuit range.
  • M20-I-C5A manufacturer product designation.
  • 20-circuit socket configuration.
  • Reverse mounting for specialist electrical assemblies.
  • 8 A rated current.
  • IP20 protection without cover / IP40 with lid.
  • Operating temperature range of -10 to +55 °C.
  • Compatible with dedicated ESSAILEC multicircuit plugs and accessories.

Reliable Multicircuit Connections for Electrical Testing

ESSAILEC multicircuit connectors provide a dedicated interface for grouping multiple electrical circuits into a single modular connection system. This arrangement can simplify commissioning, measurement, maintenance and equipment replacement by allowing compatible circuits to be connected through a purpose-designed plug-and-socket assembly.

The M20-I-C5A is specifically configured as a reverse-mounted 20-circuit socket and pairs with the compatible FIM20-I plug. Its combination of multicircuit connectivity, coding capability and industrial electrical ratings makes it suitable for protection panels, metering equipment, switchgear and other applications where reliable multi-pole test and control connections are required.

Typical Applications

  • Electrical measurement and metering systems.
  • Protection relay and control circuits.
  • Switchgear and electrical distribution panels.
  • Substation protection and control equipment.
  • Industrial testing and commissioning systems.
  • Multicircuit electrical connection and disconnection applications.

Technical Specifications

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Number of Levels 1
Connection Screw clamp
Terminal Type Feed-through
Product Series TE Essailec
Colour Grey
Manufacturer TE Connectivity / Entrelec
Series ESSAILEC Multicircuits
Model M20-I-C5A
Manufacturer part number 1SNA166777R0000
Product type Multicircuit socket / fixed terminal block
Number of circuits 20
Mounting type Reverse mounting
Colour Grey
Rated current 8 A
Short-circuit current 25 A / 5 s to 800 A / 25 ms
Protection rating IP20 without cover / IP40 with lid
Working temperature range -10 to +55 °C
Storage temperature range -25 to +70 °C
Compatible plug FIM20-I
Coding 2 × COP-E-1 coding pins supplied
Weight approx. 190 g
Factory pack quantity 1
Country of origin France
EAN 3472591667776

Frequently Asked Questions

What is the TE Connectivity 1SNA166777R0000 used for?

The 1SNA166777R0000 is an ESSAILEC 20-circuit socket designed to provide a modular connection interface for electrical measurement, testing, protection and control circuits.

How many circuits does the M20-I-C5A support?

The M20-I-C5A is a 20-circuit multicircuit socket designed for use with compatible ESSAILEC connection equipment.

What is the rated current of the M20-I-C5A?

The ESSAILEC multicircuit system has a rated current of 8 A.

Which plug is compatible with the M20-I-C5A?

The M20-I-C5A is designed for use with the compatible FIM20-I ESSAILEC multicircuit plug.

Where is the M20-I-C5A typically installed?

The M20-I-C5A is typically used in electrical measurement, protection, switchgear, substation and industrial control installations requiring a reverse-mounted 20-circuit connection interface.

Trusted for Multicircuit Electrical Connections

TE Connectivity / Entrelec ESSAILEC multicircuit products provide specialised connection solutions for measurement, protection and control systems where reliable multi-circuit connectivity, convenient testing access and efficient maintenance are essential.